CVE-2026-4064 is a high-severity vulnerability impacting PowerShell Universal versions before 2026.1.4, caused by missing authorization checks on multiple gRPC service endpoints. This flaw allows any authenticated user with a valid token to bypass role-based access controls, enabling them to perform privileged operations including reading sensitive data, creating or deleting resources, and disrupting service. With a CVSS score of 8.3 (High), it presents a low-complexity network attack vector leading to high confidentiality and integrity impacts. While not currently in CISA's KEV catalog and lacking public exploit code, this vulnerability is marked as "Active" on a hot list and has received some community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2026.1.0, < 2026.1.4CPE match | cpe:2.3:a:devolutions:powershell_universal:*:*:*:*:*:*:*:* | ||
< 2026.1.4CPE matchmatch criteria | cpe:2.3:a:ironmansoftware:powershell_universal:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.